Display screen or portion thereof with graphical user interface morphing window controls



FIG. 1 is a front view of a first image in a sequence for a displayscreen or portion thereof with a with graphical user interface morphingwindow control according to our design; and,

FIG. 2 is a front view, showing a second image thereof.

The appearance of the image transitions sequentially between FIGS. 1-2.The process or period in which an image transitions to another forms nopart of the claimed design.

The broken lines showing portions of a display screen, text, backgroundimagery and other features in the figures are environmental only andform no part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof withgraphical user interface morphing window controls, as shown anddescribed.